Track 2 - Internet Routing and IP Network management (7-Oct-96)
Autonomous Systems and EGP
2) New BGP Features
B)Destination Preference Attribute
DPA feature
Destination Preference Attribute
Optional Transitive Attribute
Allows for symetric paths by AS
(here need a picture from the usage document)
Any Peer along pathway can change the Destination Preference Value
Current problems with DPA
Not widely used because of ability to change mid-stream
Communities used instead
Gated syntax
Cisco has not implemented the Destination Preference Attribute due to implication on the route selection